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dark energy

a hypothetical form of energy whose negative pressure counteracts gravity and is assumed to be responsible for the universe expanding at an accelerating rate. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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in physics, a hypothetical force that affects the behavior of photons, counteracts gravity, and causes the universe to expand at an ever-increasing rate


Dark energy was first proposed by Albert Einstein to balance gravitation.'s 21st Century Lexicon
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dark energy in Science
dark energy  
A form of energy hypothesized to reside in the structure of space itself, responsible for the accelerating expansion of the universe. Dark energy theoretically counterbalances the kinetic energy of the universe's expansion, entailing that that the universe has no inherent curvature, as astronomical observations currently suggest. Dark energy appears to account for 73 percent of all the energy and matter in the universe. See also big bang.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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dark energy in Culture

dark energy definition

An as yet unknown and unidentified form of energy that pervades the universe and produces a force that counteracts the gravitational attraction between galaxies.

Note: Dark energy is thought to be responsible for the accelerating universe.
The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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